The transmitter and receiver may be mounted either directly on to the wall (with the beams parallel to the wall) or at 90 degrees using the supplied bracket. Alternatively, the bracket may be used to mount either unit continuously through 180 degrees.
Clean relay contacts are provided for the alarm (two adjacent beams broken) and environmental (any single beam broken) outputs. Cabling for a single unit consists of a seven core cable between the transmitter and receiver plus cables to the control equipment as normal.
For multiple unit operation a six core connection is required between master and slave units plus one additional wire between transmitters and receivers.
In a multiple unit installation all units self test on power-up to determine if they are master or slave. Afterwards all interconnection cables are monitored for correct operation and the severance of any cable will lead to an alarm condition.